rsync only sap files

Hi,
does anyone can tell me why this rsync command net work. It will copied nothing

rsync -avz --progress --include ‘.sap’ --exclude '’ /mnt/sap /home/testuser

If I try

rsync -avz --progress /mnt/sap /home/testuser

everything will copied !

The mnt/sap is an cifs share.

Thanks a lot

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Your rule is excluding everything. Take that out and the rest will
probably work nicely.

Good luck.
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